Sofa



FIG. 1 is a front elevational view of a sofa according to an embodimentof the invention;

FIG. 2 is a rear elevational view of a sofa according to an embodimentof the invention;

FIG. 3 is a side elevational view of a sofa according to an embodimentof the invention;

FIG. 4 is a top plan view of a sofa according to an embodiment of theinvention; and,

FIG. 5 is a perspective view of a sofa according to an embodiment of theinvention.

The broken lines shown are for illustrative purposes only and form nopart of the claimed design.

The ornamental design for a sofa, as shown and described.